After a March breach in which 312 envelopes containing confidential credit information about others was sent by Equifax to a woman in Maine, three nationwide credit reporting agencies have agreed to a settlement with the state which requires them to change their business practices, including tightening security and responding more quickly to consumers experiencing identity theft or fraud.

“We're going to monitor this thing for the next three years and make sure we keep their feet to the fire and change their corporate behaviors to protect our consumers,” the Bangor Daily News reported Maine Attorney General Janet Mills as saying.

The 300-plus envelopes were mailed out by accident after Equifax upgraded a process for addressing envelopes, the report said.